From mboxrd@z Thu Jan  1 00:00:00 1970
From: Bastien <bastien.guerry@wikimedia.fr>
Subject: Re: Re: how do you extract schedule duration in column-view
Date: Thu, 12 Aug 2010 19:00:46 +0200
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	(Inquisitive Scientist's message of "Thu, 12 Aug 2010 12:19:36 -0400")
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To: Inquisitive Scientist <inquisitive.scientist@gmail.com>
Cc: emacs-orgmode@gnu.org

Inquisitive Scientist <inquisitive.scientist@gmail.com> writes:

> Actually, I can almost figure out how to do this myself if I knew what function
> to use to convert a string like
>
>          SCHEDULED: <2010-08-12 Thu 10:20-10:45>
>
> into a duration. If I call org-time-string it only gives me the first part of
> the date and ignores the ending point.
>
> Any tips on what org-mode function to use to get the duration of a scheduled
> time?

Try this function on the scheduled timestamp:

,----
| (defun bzg-duration-of-timestamp-at-point ()
|   "Compute the duration of the timestamp at point."
|   (interactive)
|   (save-excursion
|     (forward-line 0)
|     (when (re-search-forward "\\<SCHEDULED: *<\\([^>]+\\) \\([0-9]+:[0-9]+\\)--?\\([0-9]+:[0-9]+\\)>" nil t)
|       (let ((date (match-string 1))
| 	    (t1  (match-string 2))
| 	    (t2  (match-string 3)))
| 	(- (org-time-string-to-seconds (concat date " " t2))
| 	   (org-time-string-to-seconds (concat date " " t1)))))))
`----

HTH,

-- 
 Bastien